those are the chance at the mitt romney and barack obama rallies before the election. what state they are zeroing in on and why. >> climate change and superstars? are they related? i will have the story coming up. >> you are watching wbal tv 11 news at 5:00 p.m. with don hamilton, your forecast with tom tasselmyer and covering breaking news where you live. wbal tv 11 news at 5:00 p.m. continues now. >> we have breaking news on the new york city marathon. the mayor has decided to cancel their race after criticism. many new yorkers had been complaining it would be insensitive and divert city resources when many are suffering. no word on whether it has been rescheduled. right now, winds of 90 miles an hour and two feet of snow. it certainly created a punch of weather extremes. >> several days later there are more questions about the impact of global warming on our climate. we joined a teleconference with some ocean scientists to find out answers on this. he joins us with more. >> the four hundred year old tree which you see behind me that has been reduced to a stop is ano